CN209586852U - A kind of pilot system of two-way cylinder - Google Patents
A kind of pilot system of two-way cylinder Download PDFInfo
- Publication number
- CN209586852U CN209586852U CN201920268794.8U CN201920268794U CN209586852U CN 209586852 U CN209586852 U CN 209586852U CN 201920268794 U CN201920268794 U CN 201920268794U CN 209586852 U CN209586852 U CN 209586852U
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- China
- Prior art keywords
- valve
- way
- oil
- oil pipe
- check valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 150000001875 compounds Chemical class 0.000 claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 29
- 238000010168 coupling process Methods 0.000 claims abstract description 29
- 238000005859 coupling reaction Methods 0.000 claims abstract description 29
- 239000002828 fuel tank Substances 0.000 claims abstract description 28
- 238000012360 testing method Methods 0.000 abstract description 10
- -1 motor Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 123
- 239000010720 hydraulic oil Substances 0.000 description 32
- 239000012530 fluid Substances 0.000 description 15
- 239000000446 fuel Substances 0.000 description 10
- 238000005336 cracking Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 239000013589 supplement Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 238000009355 double cropping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
Abstract
The utility model discloses a kind of pilot systems of two-way cylinder, it further include check valve, pilot operated compound relief valve, two-position two-way hydraulic control valve, sequence valve, 3-position 4-way hand-operated direction valve, quick coupling and accumulator including fuel tank, motor, oil scavenge pump and two-way cylinder；The oil outlet of oil scavenge pump is successively connect with rodless cavity/rod chamber of check valve, 3-position 4-way hand-operated direction valve and two-way cylinder by oil pipe, and rod chamber/rodless cavity of two-way cylinder in oil return opening of the oil pipe through 3-position 4-way hand-operated direction valve and fuel tank by being connected to；It is connect by pilot operated compound relief valve on the oil pipe between oil scavenge pump and check valve, sequence valve and two-position two-way hydraulic control valve are sequentially connected in series and on the other oil pipes connect between check valve and 3-position 4-way hand-operated direction valve, and two-position two-way hydraulic control valve is connect with pilot operated compound relief valve.The utility model be able to detect two-way cylinder starting pressure and interior leakage scenarios, and ensure that test result is accurate.
Description
Technical field
The utility model relates to the components pilot systems in turbine-generator units, and in particular to a kind of two-way cylinder
Pilot system.
Background technique
In general, there is hydraulic-driven control section in turbine-generator units, and the double acting in hydraulic-driven control section
Oil cylinder, performance directly affect whether hydraulic-driven control section works normally.Two-way cylinder needs to do before factory various
Performance test needs again to try two-way cylinder before the hydraulic-driven control section for being applied to turbine-generator units
It tests, the test such as especially interior leakage and starting pressure, to ensure the normal operation of turbine-generator units.
Summary of the invention
The purpose of the utility model is to provide a kind of pilot systems of two-way cylinder, to detect the starting of two-way cylinder
Pressure and interior leakage scenarios, it is ensured that test result is accurate.
The pilot system of two-way cylinder described in the utility model, including fuel tank, motor, oil scavenge pump and double acting oil
Cylinder further includes check valve, pilot operated compound relief valve, two-position two-way hydraulic control valve, sequence valve, 3-position 4-way hand-operated direction valve, fast quick access
Head and accumulator；The shaft of the oil scavenge pump is connected by the shaft of shaft coupling and motor, and the inlet port of oil scavenge pump passes through oil pipe
It is connected to fuel tank, oil outlet is by oil pipe successively with check valve, 3-position 4-way hand-operated direction valve and two-way cylinder without bar
Chamber/rod chamber connection, and rod chamber/rodless cavity of two-way cylinder passes through oil return opening of the oil pipe through 3-position 4-way hand-operated direction valve
It is connected to fuel tank；The quick coupling be connected to 3-position 4-way hand-operated direction valve and two-way cylinder rodless cavity and rod chamber it
Between oil pipe on；It is connect by the pilot operated compound relief valve on the oil pipe between oil scavenge pump and check valve, the sequence valve and two
Two-way pilot operated valve device is sequentially connected in series and on the other oil pipe connect between check valve and 3-position 4-way hand-operated direction valve, and bi-bit bi-pass liquid
Control valve is connect with pilot operated compound relief valve；The oil pipe between check valve and 3-position 4-way hand-operated direction valve is connect by the accumulator
On, and shut-off valve is provided on the bypass oil pipe where accumulator.
Further, on the oil pipe between the oil scavenge pump and check valve and check valve and 3-position 4-way manual reverse of direction
It is other on oil pipe between valve to be connected to pressure gauge, shut-off valve is provided on the bypass oil pipe where pressure gauge.
Further, the oil scavenge pump is shaft orientation plunger variable pump.
Further, the quick coupling is the quick coupling with check valve.
When carrying out starting pressure testing to two-way cylinder, first start motor, motor moving axis is axial to plunger variable pump
Plunger variable pump oil suction out of fuel tank, the fuel feeding into oil pipe；Under original state, 3-position 4-way hand-operated direction valve is in middle position, axis
To plunger variable pump off-load, the hydraulic oil in oil pipe is successively back in fuel tank through check valve and 3-position 4-way hand-operated direction valve；
3-position 4-way hand-operated direction valve is adjusted to right position, slowly adjusts pilot operated compound relief valve, until the piston rod of two-way cylinder is opened
Begin to eject, reads the pressure gauge reading value on the bypass oil pipe between check valve and 3-position 4-way hand-operated direction valve, the reading value
The as starting pressure value of two-way cylinder.
To two-way cylinder carry out in leak test when, first start motor, motor moving axis is to plunger variable pump, axial columns
Fill in variable pump oil suction out of fuel tank, the fuel feeding into oil pipe；Under original state, 3-position 4-way hand-operated direction valve is in middle position, axial
Plunger variable pump off-load, the hydraulic oil in oil pipe are successively back in fuel tank through check valve and 3-position 4-way hand-operated direction valve；When
Under original state, when the piston rod of two-way cylinder is in retracted mode, 3-position 4-way hand-operated direction valve is adjusted to right position, oil
Hydraulic oil in pipe enters in the rodless cavity of two-way cylinder through 3-position 4-way hand-operated direction valve, quick coupling, two-way cylinder
Piston rod start to eject, in the process, once from shaft orientation plunger variable pump outlet discharge hydraulic fluid pressure (i.e. fuel feeding
Pressure) be higher than pilot operated compound relief valve cracking pressure when, pilot operated compound relief valve open, from the oil outlet of shaft orientation plunger variable pump arrange
A part of hydraulic oil out is unloaded through the unloading port of pilot operated compound relief valve to be flow back into fuel tank, it is ensured that in the oil pipe after check valve
Hydraulic fluid pressure is kept constant.When piston rod is moved to its range, shaft orientation plunger variable pump starts low discharge capacity to oil pipe
Interior fuel feeding, it is poor by the hydraulic oil discharge capacity in accumulator supplement oil pipe, once the hydraulic fluid pressure in oil pipe after check valve is high
When the cracking pressure of sequence valve, sequence valve is opened, and a part of hydraulic oil in oil pipe after check valve is flow to through sequence valve
Two-position two-way hydraulic control valve opens two-position two-way hydraulic control valve, and the unloading port through pilot operated compound relief valve unloads and flows back into fuel tank, really
The hydraulic fluid pressure in oil pipe after guarantor's check valve is constant.After the time of pressure maintaining one end, it will connect with the rod chamber of two-way cylinder
The quick coupling on oil pipe connect is dismantled, using rod-like instrument by " pin end " or " female on one end oil pipe connecting with oil cylinder
Check valve in connector " opens, and detects in the oil-break pipe with the presence or absence of hydraulic oil, does not have hydraulic oil such as, then show the double acting
The piston two sides ne-leakage of oil cylinder, the two-way cylinder are qualified；Conversely, then proving that the two-way cylinder is unqualified.
Similarly, under original state, when the piston rod of two-way cylinder is in stretching state, by 3-position 4-way manual reverse of direction
To left position, hydraulic oil in oil pipe has bar through what 3-position 4-way hand-operated direction valve, quick coupling entered two-way cylinder for valve regulation
Intracavitary, the piston rod of two-way cylinder starts to retract, in the process, once the liquid of the outlet discharge from shaft orientation plunger variable pump
When oil pressure (i.e. charge oil pressure) is higher than the cracking pressure of pilot operated compound relief valve, pilot operated compound relief valve is opened, from axial plunger
A part of hydraulic oil of the oil outlet discharge of variable pump is unloaded through the unloading port of pilot operated compound relief valve to be flow back into fuel tank, it is ensured that unidirectional
The hydraulic fluid pressure in oil pipe after valve is kept constant.When piston rod is retracted to its range, shaft orientation plunger variable pump
Start low discharge capacity fuel feeding into oil pipe, it is poor by the hydraulic oil discharge capacity in accumulator supplement oil pipe, once the oil pipe after check valve
When interior hydraulic fluid pressure is higher than the cracking pressure of sequence valve, sequence valve is opened, a part of liquid in oil pipe after check valve
Pressure oil flow to two-position two-way hydraulic control valve through sequence valve, and two-position two-way hydraulic control valve is opened, and the unloading port through pilot operated compound relief valve
It unloads and flows back into fuel tank, it is ensured that the hydraulic fluid pressure in oil pipe after check valve is constant.It, will be with double cropping after the time of pressure maintaining one end
The quick coupling on oil pipe connected with the rodless cavity of oil cylinder is dismantled, will be on one end oil pipe that connect with oil cylinder using rod-like instrument
" pin end " or " female connector " in check valve open, detect in the oil-break pipe with the presence or absence of hydraulic oil, there is no hydraulic oil such as,
Then show that the piston two sides ne-leakage of the two-way cylinder, the two-way cylinder are qualified；Conversely, then proving the two-way cylinder not
It is qualified.
In the utility model, due to using shaft orientation plunger variable pump fuel feeding into the oil pipe of pilot system, have operating flat
Surely, the advantages that discharge uniformity is good, and noise is low, and operating pressure is high；By in 3-position 4-way hand-operated direction valve and two-way cylinder
Between oil pipe on be provided with the quick coupling of check valve, when observing the interior leakage scenarios of two-way cylinder, need to only dismantle
Quick coupling on oil return oil pipe can be observed the interior leakage scenarios of two-way cylinder, and have the quick coupling of check valve
It ensures when dismantling quick coupling, the hydraulic oil in oil return oil pipe will not spray, and test for contamination site environment；By in list
It is other on the oil pipe between valve and 3-position 4-way hand-operated direction valve to connect sequence valve and two-position two-way hydraulic control valve, and in check valve and three
It is other on oil pipe between the four-way hand-operated direction valve of position to connect accumulator, thus the hydraulic oil in the oil pipe after ensure that check valve
Pressure is constant, i.e., in pressure maintaining period, constant pressure is continuously applied to the piston in two-way cylinder, it is ensured that test result
Accuracy.
Detailed description of the invention
Fig. 1 is the control principle drawing of the utility model；
In figure: 1-fuel tank, 2-motors, 3-oil scavenge pumps, 4-shut-off valves, 5-pressure gauges, 6-check valves, 7-guides
Formula overflow valve, 8-two-position two-way hydraulic control valves, 9-sequence valves, 10-3-position 4-way hand-operated direction valves, 11-quick couplings, 12-
Two-way cylinder, 13-accumulators.
Specific embodiment
The utility model will be further described with reference to the accompanying drawing.
The pilot system of two-way cylinder 12 shown in Figure 1, including fuel tank 1, motor 2, oil scavenge pump 3 and double acting oil
Cylinder 12 further includes check valve 6, pilot operated compound relief valve 7, two-position two-way hydraulic control valve 8, sequence valve 9,3-position 4-way hand-operated direction valve
10, quick coupling 11 and accumulator 13；The shaft of the oil scavenge pump 3 is connect by shaft coupling with the shaft of motor 2, oil scavenge pump 3
Inlet port be connected to fuel tank 1 by oil pipe, oil outlet pass through oil pipe successively with check valve 6,3-position 4-way hand-operated direction valve
10 and two-way cylinder 12 rodless cavity/rod chamber connection, and rod chamber/rodless cavity of two-way cylinder 12 by oil pipe through three
The oil return opening of position four-way hand-operated direction valve 10 is connected to fuel tank 1；The quick coupling be connected to 3-position 4-way hand-operated direction valve with
On oil pipe between the rodless cavity and rod chamber of two-way cylinder；It connects by the pilot operated compound relief valve 7 in oil scavenge pump 3 and check valve
On oil pipe between 6, the sequence valve 9 and two-position two-way hydraulic control valve 8 is sequentially connected in series and side connects in check valve 6 and 3-position 4-way hand
On oil pipe between dynamic reversal valve 10, and two-position two-way hydraulic control valve 8 is connect with pilot operated compound relief valve 7；It is connect by the accumulator 13
On oil pipe between check valve 6 and 3-position 4-way hand-operated direction valve 10, and it is arranged on the bypass oil pipe where accumulator 13
There is shut-off valve 4.
In order to which the starting pressure to two-way cylinder 12 detects, in check valve 6 and 3-position 4-way hand-operated direction valve 10
Between oil pipe on other be connected to pressure gauge 5；The hydraulic oil pressure being discharged for real-time detection from the oil outlet of shaft orientation plunger variable pump
Power, it is other on the oil pipe between oil scavenge pump 3 and check valve 6 to be connected to pressure gauge 5；In order to prevent in the pressure for repairing or replacing damage
When table 5, the bypass oil pipe where hydraulic oil from pressure gauge 5 in oil pipe overflows, and is arranged on the bypass oil pipe where pressure gauge 5
There is shut-off valve 4, under normal circumstances, which is normally open, when repairing or replacing the pressure gauge 5 of damage, the shut-off valve
4 are in off state.
It should be noted that the oil scavenge pump 3 is shaft orientation plunger variable pump, shaft orientation plunger variable pump in the present embodiment
Adaptivity is preferable, and the pressure and flow of output can be consistent with loading demand, and energy loss is lower, and system effectiveness mentions
The advantages that height, energy-saving effect is fairly obvious, and has smooth running, and discharge uniformity is good, and noise is low, and operating pressure is high.
And it should be noted that in the present embodiment, the quick coupling 11 is the quick coupling 11 with check valve 6,
Each quick coupling 11 is made of " pin end " and " female connector " being mutually paired, the setting in " pin end " or " female connector "
There is check valve 6, after " pin end " and " female connector " is dismantled, check valve 6 can close oil pipe, play the role of cut-off, prevent oil pipe
Interior hydraulic oil sprays；When " pin end " and " female connector " docking after, in check valve 6 opened, it is ensured that it is unimpeded in oil pipe.
When carrying out starting pressure testing to two-way cylinder 12, first starting motor 2, motor 2 drives shaft orientation plunger variable pump,
Shaft orientation plunger variable pump oil suction out of fuel tank 1, the fuel feeding into oil pipe；Under original state, 3-position 4-way hand-operated direction valve 10 is in
Middle position, shaft orientation plunger variable pump off-load, the hydraulic oil in oil pipe successively flow back through check valve 6 and 3-position 4-way hand-operated direction valve 10
To fuel tank 1；3-position 4-way hand-operated direction valve 10 is adjusted to right position, slowly adjusts pilot operated compound relief valve 7, until double acting oil
The piston rod of cylinder 12 starts to eject, and reads the pressure on the bypass oil pipe between check valve 6 and 3-position 4-way hand-operated direction valve 10
5 reading value of table, the reading value are the starting pressure value of two-way cylinder 12.
When carrying out interior leak test to two-way cylinder 12, first start motor 2, motor 2 drives shaft orientation plunger variable pump, axis
To plunger variable pump oil suction out of fuel tank 1, the fuel feeding into oil pipe；Under original state, during 3-position 4-way hand-operated direction valve 10 is in
Position, shaft orientation plunger variable pump off-load, the hydraulic oil in oil pipe are successively back to through check valve 6 and 3-position 4-way hand-operated direction valve 10
In fuel tank 1；Under original state, when the piston rod of two-way cylinder is in retracted mode, by 3-position 4-way hand-operated direction valve 10
It is adjusted to right position, the hydraulic oil in oil pipe enters two-way cylinder 12 through 3-position 4-way hand-operated direction valve 10, quick coupling 11
In rodless cavity, the piston rod of two-way cylinder 12 starts to eject, in the process, once it is arranged from the outlet of shaft orientation plunger variable pump
When hydraulic fluid pressure (i.e. charge oil pressure) out is higher than the cracking pressure of pilot operated compound relief valve 7, pilot operated compound relief valve 7 is opened, from
A part of hydraulic oil of the oil outlet discharge of shaft orientation plunger variable pump is unloaded through the unloading port of pilot operated compound relief valve 7 flows back into fuel tank 1
It is interior, it is ensured that the hydraulic fluid pressure in oil pipe after check valve 6 is kept constant.When piston rod is moved to its range, axis
Start low discharge capacity fuel feeding into oil pipe to plunger variable pump, it is poor by the hydraulic oil discharge capacity in the supplement oil pipe of accumulator 13, once it is single
When hydraulic fluid pressure into the oil pipe after valve 6 is higher than the cracking pressure of sequence valve 9, sequence valve 9 is opened, after check valve 6
Oil pipe in a part of hydraulic oil flow to two-position two-way hydraulic control valve 8 through sequence valve 9, two-position two-way hydraulic control valve 8 is opened, and passes through
The unloading port of pilot operated compound relief valve 7, which unloads, to be flow back into fuel tank 1, it is ensured that the hydraulic fluid pressure in oil pipe after check valve 6 is constant.
After the time of pressure maintaining one end, the quick coupling 11 on the oil pipe connecting with the rod chamber of two-way cylinder 12 is dismantled, use is rodlike
Tool (not shown) opens the check valve 6 in " pin end " or " female connector " on one end oil pipe connecting with oil cylinder,
It detects in the oil-break pipe with the presence or absence of hydraulic oil, there is no hydraulic oil such as, then show the piston two sides of the two-way cylinder 12 without infiltration
Leakage, the two-way cylinder 12 are qualified；Conversely, then proving that the two-way cylinder 12 is unqualified.
Similarly, under original state, when the piston rod of two-way cylinder is in stretching state, by 3-position 4-way manual reverse of direction
Valve 10 is adjusted to left position, and the hydraulic oil in oil pipe enters two-way cylinder through 3-position 4-way hand-operated direction valve 10, quick coupling 11
In 12 rod chamber, the piston rod of two-way cylinder 12 starts to retract, in the process, once going out from shaft orientation plunger variable pump
When mouth has the hydraulic fluid pressure (i.e. charge oil pressure) of discharge to be higher than the cracking pressure of pilot operated compound relief valve 7, pilot operated compound relief valve 7 is beaten
It opens, a part of hydraulic oil being discharged from the oil outlet of shaft orientation plunger variable pump is unloaded through the unloading port of pilot operated compound relief valve 7 to be flow back into
In fuel tank 1, it is ensured that the hydraulic fluid pressure in oil pipe after check valve 6 is kept constant.When piston rod is retracted to its range
When, shaft orientation plunger variable pump starts low discharge capacity fuel feeding into oil pipe, and it is poor by the hydraulic oil discharge capacity in the supplement oil pipe of accumulator 13, one
When the hydraulic fluid pressure in oil pipe after denier check valve 6 is higher than the cracking pressure of sequence valve 9, sequence valve 9 is opened, check valve 6
A part of hydraulic oil in oil pipe later flow to two-position two-way hydraulic control valve 8 through sequence valve 9, and two-position two-way hydraulic control valve 8 is opened,
And the unloading port through pilot operated compound relief valve 7 unloads and flows back into fuel tank 1, it is ensured that the hydraulic fluid pressure in oil pipe after check valve 6
It is constant.After the time of pressure maintaining one end, the quick coupling 11 on the oil pipe connecting with the rodless cavity of two-way cylinder 12 is dismantled, is used
Rod-like instrument (not shown) pushes up the check valve 6 in " pin end " or " female connector " on one end oil pipe connecting with oil cylinder
Open, detect in the oil-break pipe with the presence or absence of hydraulic oil, there is no hydraulic oil such as, then show the piston two sides of the two-way cylinder 12 without
Leakage, the two-way cylinder 12 are qualified；Conversely, then proving that the two-way cylinder 12 is unqualified.
Claims (4)
1. a kind of pilot system of two-way cylinder, including fuel tank (1), motor (2), oil scavenge pump (3) and two-way cylinder (12),
It is characterized by also including check valve (6), pilot operated compound relief valve (7), two-position two-way hydraulic control valve (8), sequence valves (9), three four
Logical hand-operated direction valve (10), quick coupling (11) and accumulator (13)；The shaft of the oil scavenge pump passes through shaft coupling and motor
Shaft connection, the inlet port of oil scavenge pump are connected to by oil pipe with fuel tank, oil outlet pass through oil pipe successively with check valve, three four
The rodless cavity of logical hand-operated direction valve and two-way cylinder/rod chamber connection, and rod chamber/rodless cavity of two-way cylinder passes through oil
Pipe is connected to through the oil return opening of 3-position 4-way hand-operated direction valve with fuel tank, and the quick coupling is connected to 3-position 4-way hand-operated direction valve
On oil pipe between the rodless cavity and rod chamber of two-way cylinder；It connects by the pilot operated compound relief valve in oil scavenge pump and check valve
Between oil pipe on, the sequence valve and two-position two-way hydraulic control valve is sequentially connected in series and side connects and changes manually in check valve with 3-position 4-way
To on the oil pipe between valve, and two-position two-way hydraulic control valve is connect with pilot operated compound relief valve；Connect by the accumulator check valve with
On oil pipe between 3-position 4-way hand-operated direction valve, and shut-off valve (4) are provided on the bypass oil pipe where accumulator.
2. the pilot system of two-way cylinder according to claim 1, it is characterised in that: the oil scavenge pump (3) and single
It is other on oil pipe on the oil pipe between valve (6) and between check valve (6) and 3-position 4-way hand-operated direction valve (10) to be connected to pressure
Power table (5) is provided with shut-off valve (4) on the bypass oil pipe where pressure gauge.
3. the pilot system of two-way cylinder according to claim 1 or 2, it is characterised in that: the oil scavenge pump (3) is axis
To plunger variable pump.
4. the pilot system of two-way cylinder according to claim 1, it is characterised in that: the quick coupling (11) is band
The quick coupling of check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920268794.8U CN209586852U (en) | 2019-03-04 | 2019-03-04 | A kind of pilot system of two-way cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920268794.8U CN209586852U (en) | 2019-03-04 | 2019-03-04 | A kind of pilot system of two-way cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209586852U true CN209586852U (en) | 2019-11-05 |
Family
ID=68371341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920268794.8U Expired - Fee Related CN209586852U (en) | 2019-03-04 | 2019-03-04 | A kind of pilot system of two-way cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209586852U (en) |
-
2019
- 2019-03-04 CN CN201920268794.8U patent/CN209586852U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191105 |